diff --git a/mobs/larva.lua b/mobs/larva.lua
index fb81a75..df09657 100644
--- a/mobs/larva.lua
+++ b/mobs/larva.lua
@@ -76,11 +76,8 @@ mobs:register_mob("nssm:larva", {
 				false, --collisiondetection
 				"tnt_smoke.png" --texture
 			)
-			if math.random(1,2)==1 then
-				minetest.add_entity(pos, "nssm:mantis")
-			else
-				minetest.add_entity(pos, "nssm:mantis_beast")
-			end
+			
+			minetest.add_entity(pos, "nssm:mantis")
 			return
 		end
 	end
diff --git a/nssm_materials.lua b/nssm_materials.lua
index ad02c2e..956b8fd 100644
--- a/nssm_materials.lua
+++ b/nssm_materials.lua
@@ -343,9 +343,12 @@ minetest.register_node("nssm:web", {
 
 minetest.register_node("nssm:mud", {
 	description = "Mud",
-	inventory_image = "mud.png",
-	tile_images = {"mud.png"} ,
+	inventory_image = "mude.png",
+	tiles = {
+		{name="mud_animated.png", animation={type="vertical_frames", aspect_w=16, aspect_h=16, length=16.0}}
+	},
 	walkable = false,
+	paramtype = "light",
 	pointable = true,
 	buildable_to = false,
 	drop = "",
@@ -355,8 +358,8 @@ minetest.register_node("nssm:mud", {
 	liquid_range= 0,
 	liquid_alternative_flowing = "nssm:mud",
 	liquid_alternative_source = "nssm:mud",
-	liquid_viscosity = 20,
-	groups = {flammable=0, snappy=1, liquid=1},
+	liquid_viscosity = 10,
+	groups = {crumbly=1, liquid=1},
 })
 
 minetest.register_abm({
diff --git a/textures/mud_animated.png b/textures/mud_animated.png
new file mode 100644
index 0000000..1973dc2
Binary files /dev/null and b/textures/mud_animated.png differ
diff --git a/textures/mude.png b/textures/mude.png
new file mode 100644
index 0000000..fad088a
Binary files /dev/null and b/textures/mude.png differ
diff --git a/todo.txt b/todo.txt
index bb49f93..bdc3e52 100644
--- a/todo.txt
+++ b/todo.txt
@@ -1,5 +1,5 @@
 Modelli:
- - correggere mantis che si sdraia
+ - correggere mantis che si sdraia (la mantis dev'essere invisibile, la si vede solo quando corre o attacca!)
 
 Armi energetiche:
  - controllo modalità creativa